diff options
Diffstat (limited to 'rtl/modular/modular_invertor/helper/modinv_helper_invert_update.v')
-rw-r--r-- | rtl/modular/modular_invertor/helper/modinv_helper_invert_update.v | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/rtl/modular/modular_invertor/helper/modinv_helper_invert_update.v b/rtl/modular/modular_invertor/helper/modinv_helper_invert_update.v deleted file mode 100644 index ede2fc1..0000000 --- a/rtl/modular/modular_invertor/helper/modinv_helper_invert_update.v +++ /dev/null @@ -1,257 +0,0 @@ -`timescale 1ns / 1ps - -module modinv_helper_invert_update - ( - clk, rst_n, - ena, rdy, - - u_gt_v, v_eq_1, - u_is_even, v_is_even, - - r_addr, r_wren, r_dout, - s_addr, s_wren, s_dout, - u_addr, u_wren, u_dout, - v_addr, v_wren, v_dout, - - r_dbl_addr, r_dbl_din, - s_dbl_addr, s_dbl_din, - r_plus_s_addr, r_plus_s_din, - u_half_addr, u_half_din, - v_half_addr, v_half_din, - u_minus_v_half_addr, u_minus_v_half_din, - v_minus_u_half_addr, v_minus_u_half_din - ); - - - // - // Parameters - // - parameter BUFFER_NUM_WORDS = 9; - parameter BUFFER_ADDR_BITS = 4; - - - // - // clog2 - // -`include "../modinv_clog2.v" - - - // - // Constants - // - localparam PROC_NUM_CYCLES = BUFFER_NUM_WORDS + 3; - localparam PROC_CNT_BITS = clog2(PROC_NUM_CYCLES); - - - // - // Ports - // - input wire clk; - input wire rst_n; - input wire ena; - output wire rdy; - - input wire u_gt_v; - input wire v_eq_1; - input wire u_is_even; - input wire v_is_even; - - output wire [BUFFER_ADDR_BITS-1:0] r_addr; - output wire [BUFFER_ADDR_BITS-1:0] s_addr; - output wire [BUFFER_ADDR_BITS-1:0] u_addr; - output wire [BUFFER_ADDR_BITS-1:0] v_addr; - - output wire r_wren; - output wire s_wren; - output wire u_wren; - output wire v_wren; - - output wire [ 32-1:0] r_dout; - output wire [ 32-1:0] s_dout; - output wire [ 32-1:0] u_dout; - output wire [ 32-1:0] v_dout; - - output wire [BUFFER_ADDR_BITS-1:0] r_dbl_addr; - output wire [BUFFER_ADDR_BITS-1:0] s_dbl_addr; - output wire [BUFFER_ADDR_BITS-1:0] r_plus_s_addr; - output wire [BUFFER_ADDR_BITS-1:0] u_half_addr; - output wire [BUFFER_ADDR_BITS-1:0] v_half_addr; - output wire [BUFFER_ADDR_BITS-1:0] u_minus_v_half_addr; - output wire [BUFFER_ADDR_BITS-1:0] v_minus_u_half_addr; - - input wire [ 32-1:0] r_dbl_din; - input wire [ 32-1:0] s_dbl_din; - input wire [ 32-1:0] r_plus_s_din; - input wire [ 32-1:0] u_half_din; - input wire [ 32-1:0] v_half_din; - input wire [ 32-1:0] u_minus_v_half_din; - input wire [ 32-1:0] v_minus_u_half_din; - - - // - // Counter - // - reg [PROC_CNT_BITS-1:0] proc_cnt; - - wire [PROC_CNT_BITS-1:0] proc_cnt_max = PROC_NUM_CYCLES - 1; - wire [PROC_CNT_BITS-1:0] proc_cnt_zero = {PROC_CNT_BITS{1'b0}}; - wire [PROC_CNT_BITS-1:0] proc_cnt_next = (proc_cnt < proc_cnt_max) ? - proc_cnt + 1'b1 : proc_cnt_zero; - - // - // Addresses - // - reg [BUFFER_ADDR_BITS-1:0] addr_in; - - wire [BUFFER_ADDR_BITS-1:0] addr_in_max = BUFFER_NUM_WORDS - 1; - wire [BUFFER_ADDR_BITS-1:0] addr_in_zero = {BUFFER_ADDR_BITS{1'b0}}; - wire [BUFFER_ADDR_BITS-1:0] addr_in_next = (addr_in < addr_in_max) ? - addr_in + 1'b1 : addr_in_zero; - - reg [BUFFER_ADDR_BITS-1:0] addr_out; - - wire [BUFFER_ADDR_BITS-1:0] addr_out_max = BUFFER_NUM_WORDS - 1; - wire [BUFFER_ADDR_BITS-1:0] addr_out_zero = {BUFFER_ADDR_BITS{1'b0}}; - wire [BUFFER_ADDR_BITS-1:0] addr_out_next = (addr_out < addr_out_max) ? - addr_out + 1'b1 : addr_out_zero; - - assign r_addr = addr_out; - assign s_addr = addr_out; - assign u_addr = addr_out; - assign v_addr = addr_out; - - assign r_dbl_addr = addr_in; - assign s_dbl_addr = addr_in; - assign r_plus_s_addr = addr_in; - assign u_half_addr = addr_in; - assign v_half_addr = addr_in; - assign u_minus_v_half_addr = addr_in; - assign v_minus_u_half_addr = addr_in; - - - // - // Ready Flag - // - assign rdy = (proc_cnt == proc_cnt_zero); - - - // - // Address Increment Logic - // - wire inc_addr_in; - wire inc_addr_out; - - wire [PROC_CNT_BITS-1:0] cnt_inc_addr_in_start = 1; - wire [PROC_CNT_BITS-1:0] cnt_inc_addr_in_stop = BUFFER_NUM_WORDS; - - wire [PROC_CNT_BITS-1:0] cnt_inc_addr_out_start = 2; - wire [PROC_CNT_BITS-1:0] cnt_inc_addr_out_stop = BUFFER_NUM_WORDS + 1; - - assign inc_addr_in = (proc_cnt >= cnt_inc_addr_in_start) && (proc_cnt <= cnt_inc_addr_in_stop); - assign inc_addr_out = (proc_cnt >= cnt_inc_addr_out_start) && (proc_cnt <= cnt_inc_addr_out_stop); - - always @(posedge clk) begin - // - if (inc_addr_in) addr_in <= addr_in_next; - else addr_in <= addr_in_zero; - // - if (inc_addr_out) addr_out <= addr_out_next; - else addr_out <= addr_out_zero; - // - end - - // - // Write Enable Logic - // - wire wren_out; - - wire [PROC_CNT_BITS-1:0] cnt_wren_out_start = 2; - wire [PROC_CNT_BITS-1:0] cnt_wren_out_stop = BUFFER_NUM_WORDS + 1; - - assign wren_out = (proc_cnt >= cnt_wren_out_start) && (proc_cnt <= cnt_wren_out_stop); - - reg r_wren_allow; - reg s_wren_allow; - reg u_wren_allow; - reg v_wren_allow; - - assign r_wren = wren_out && r_wren_allow && !v_eq_1 && !rdy; - assign s_wren = wren_out && s_wren_allow && !v_eq_1 && !rdy; - assign u_wren = wren_out && u_wren_allow && !v_eq_1 && !rdy; - assign v_wren = wren_out && v_wren_allow && !v_eq_1 && !rdy; - - - // - // Data Logic - // - reg [31: 0] r_dout_mux; - reg [31: 0] s_dout_mux; - reg [31: 0] u_dout_mux; - reg [31: 0] v_dout_mux; - - assign r_dout = r_dout_mux; - assign s_dout = s_dout_mux; - assign u_dout = u_dout_mux; - assign v_dout = v_dout_mux; - - always @(*) begin - // - // r, s, u, v - // - if (u_is_even) begin - // - u_dout_mux = u_half_din; - v_dout_mux = {32{1'bX}}; - r_dout_mux = {32{1'bX}}; - s_dout_mux = s_dbl_din; - // - u_wren_allow = 1'b1; - v_wren_allow = 1'b0; - r_wren_allow = 1'b0; - s_wren_allow = 1'b1; - // - end else begin - // - if (v_is_even) begin - // - u_dout_mux = {32{1'bX}}; - v_dout_mux = v_half_din; - r_dout_mux = r_dbl_din; - s_dout_mux = {32{1'bX}}; - // - u_wren_allow = 1'b0; - v_wren_allow = 1'b1; - r_wren_allow = 1'b1; - s_wren_allow = 1'b0; - // - end else begin - // - u_dout_mux = u_gt_v ? u_minus_v_half_din : {32{1'bX}}; - v_dout_mux = u_gt_v ? {32{1'bX}} : v_minus_u_half_din; - r_dout_mux = u_gt_v ? r_plus_s_din : r_dbl_din; - s_dout_mux = u_gt_v ? s_dbl_din : r_plus_s_din; - // - u_wren_allow = u_gt_v; - v_wren_allow = !u_gt_v; - r_wren_allow = 1'b1; - s_wren_allow = 1'b1; - // - end - // - end - // - end - - - // - // Primary Counter Logic - // - always @(posedge clk or negedge rst_n) - // - if (rst_n == 1'b0) proc_cnt <= proc_cnt_zero; - else begin - if (!rdy) proc_cnt <= proc_cnt_next; - else if (ena) proc_cnt <= proc_cnt_next; - end - -endmodule |